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Choosing the right signal: Doppler shift estimation for underwater acoustic signals

Published: 05 November 2012 Publication History

Abstract

In this paper, we consider the problem of estimating the coarse Doppler shift ratio for underwater acoustic communication (UWAC). Since underwater the constant motion of nodes results in Doppler shifts that significantly distort received signals, estimating the Doppler shift and compensating for it is required for all UWAC applications. Different than for terrestrial radio-frequency where the Doppler effect is modeled by a frequency shift, due to the slow sound speed in water, the effect of transceiver motion on the duration of the symbol cannot be neglected. Furthermore, since the carrier frequency and the signal bandwidth are of the same order, UWAC signals are considered wideband and Doppler-induced frequency shifts cannot be assumed fixed throughout the signal bandwidth. Considering these challenges, we present a method for Doppler-shift estimation based on comparing the arrival times of two chirp signals and approximating the relation between this time difference and the Doppler shift ratio. This analysis also provides an interesting insight about the resilience of chirp signals to Doppler shift. Our simulation results demonstrate improvement compared to commonly used benchmark methods in terms of accuracy of the Doppler shift estimation at near-Nyquist baseband sampling rates.

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  • (2024)Joint Autonomous Underwater Vehicle Trajectory and Energy Optimization for Underwater Covert CommunicationsIEEE Transactions on Communications10.1109/TCOMM.2024.341278272:11(7327-7341)Online publication date: Nov-2024
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cover image ACM Conferences
WUWNet '12: Proceedings of the 7th International Conference on Underwater Networks & Systems
November 2012
243 pages
ISBN:9781450317733
DOI:10.1145/2398936
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 05 November 2012

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Author Tags

  1. Doppler shift
  2. LFM chirp
  3. QFM chirp
  4. underwater acoustic communication

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WUWNET '12
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WUWNET '12: Conference on Under Water Networks
November 5 - 6, 2012
California, Los Angeles

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Overall Acceptance Rate 84 of 180 submissions, 47%

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Cited By

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  • (2024)PHS: A Pulse Sequence Method Based on Hyperbolic Frequency Modulation for Speed MeasurementInternational Journal of Distributed Sensor Networks10.1155/2024/66705762024(1-11)Online publication date: 12-Jan-2024
  • (2024)Comparison of Sweep Spread Carrier and Frequency Shift Chirp Modulation in Shallow Waters2024 Seventh Underwater Communications and Networking Conference (UComms)10.1109/UComms64662.2024.10847981(1-5)Online publication date: 3-Sep-2024
  • (2024)Joint Autonomous Underwater Vehicle Trajectory and Energy Optimization for Underwater Covert CommunicationsIEEE Transactions on Communications10.1109/TCOMM.2024.341278272:11(7327-7341)Online publication date: Nov-2024
  • (2024)Sustainable Fishing: Chirp-Based Signals for Underwater Acoustic Communication and LocalizationIEEE Transactions on AgriFood Electronics10.1109/TAFE.2024.34328372:2(527-535)Online publication date: Sep-2024
  • (2024)Net Fishing Localization: Performance of TDOA-based Positioning Technique in Underwater Acoustic Channels Using Chirp Signals2024 IEEE International Symposium on Circuits and Systems (ISCAS)10.1109/ISCAS58744.2024.10558370(1-5)Online publication date: 19-May-2024
  • (2024)Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic ChannelIEEE Access10.1109/ACCESS.2024.338544112(49976-49986)Online publication date: 2024
  • (2023)Doppler Shift and SFO Robust Synchronization for LoRa-Like Acoustic Underwater CommunicationIEEE Access10.1109/ACCESS.2023.333460611(130527-130547)Online publication date: 2023
  • (2023)A prefix‐based approach for joint Doppler and channel estimation in underwater communicationInternational Journal of Communication Systems10.1002/dac.561636:18Online publication date: 19-Sep-2023
  • (2023)Synchronization techniques for underwater acoustic communicationsInternational Journal of Communication Systems10.1002/dac.556336:15Online publication date: 4-Jul-2023
  • (2022)Underwater Acoustic Modem for a MOrphing Distributed Autonomous Underwater Vehicle (MODA)OCEANS 2022 - Chennai10.1109/OCEANSChennai45887.2022.9775308(1-8)Online publication date: 21-Feb-2022
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